Spring-wheel



J. A. JOHNSON.

SPRING WHEEL.

APPLICATION FILED MAY 8, 1920.

Patented Mar. 1, 1921.

(xiii/3:3

nears; STATS JOHN A. JOHNSON, OF VEBONA, WYOMING.

SPRING-WHEEL.

iscasia.

To all whom it may concern: it Known that l, JQI-IN A. JOHNSON, acit no-1 oi? the United States, residing at Verona in the county of Sheridan and State of Wyoming, have invented certainnew and I I e g userul Improvements in Sprmg-Wheels, of

. which thefollowing is a specification, reference. being had to the accompanying drawings.

This invention relates to spring" wheels and has for its object to provide a device of this character which absorbs all of the shocks 7 and jars received in the course of travel before they are transmitted tothe axle of the 7 vehicle. 7 I V I Another object is to provide a device of this character which eliminatesthe use of pivoted or movable parts so as to prevent wear and at the same time retain the desired resiliency. 1

Another object is to provide a device of this character including springs having their ends'larger or thicker than their intermedi.--

ate'portions, so as to properly sustain the weight applied to the wheeliand prevent damage to the springs. i

A still further object of the inventlon' 1s to provide a device of this character wherein the springs can be readily removed and replaced by other springs of different shape and strength according to the form of yehicle to which the wheel is applied.

With these and other objects in view the invention consists in the improved construction and arrangement of partsto be hereinafter more particularly described fully vation showing a modified form of spring.

Referring to drawings, 5 designates an annular hub member having its marginal edges projecting above each side ofthe hub and beyond the periphery thereof, to provide an annular recess 6 in each side of the hub and an endless channel 7 in the periphery of the hub. The hub when intended for use on the rear axle includesa brake drum 8 formed integral with the hub. A series or Specification of Letters Patent.

Application filed May 8, 1920. Serial No; 379,819.

Patented Ma. 1,1921.

openingsi) are provided in the sides of the hub member closely adjacent the periphery thereof, the openings extending laterally of the hub; Each openinghasthe edge thereof ad aCent the'peripherypfthe hub formed into a recess 10 while extending through the 7 is-an openingll. this means, each of the openings 9. communicate with the channel 7in the periphery of the hub. i p In order to absorb all shocks and jars reend wall of the recess 10 fromthe channel.

ceived by'the wheel a pluralityiof springs 12 are provided, the springs being semi-cic'ular in form so thatthe compression vof-the lower sprlngswill cause the expansion of; the up? per springs of the wheel and therebyequali-ze the strain" and absorb the shock.

terinediate portion thereof toprovi-de feet 13 and 14, the spring tapering from the feet upwardly toward Pthe intermediate portion in angular relation to each foot. :Theffoot '13is longer than the footl t 'andhasfits end beveled toengage the rear portion of the adjacent foot 13 when the springs are The ends of the Zspring'are thicker than the in-] disposed the channel 7. this means, the portion of the spring recelv'ingthe most 3 I strain is firmly braced to prevent breaking and as the spring is constructed in this form, its resiliency is not interfered with as would be the case if the ends'of the springswe re bent under. lt will also'be noted. that the foot 13 of. each spring conforms to the con tour of heperi'pheryof the hub and lies "flush with the marginal edges thereof in addition to bracing the preceding foot 13; thereby, eliminating danger of twisting or side movement of the spring. I I

A folly or rim 16 1s provided, the rim hav- .95' ing its marglnal edges extended outwardly" in parallel relation to each other to provide a channel 17. A series of openings .18 are providedin the rim and are disposed-substantially in alinement with the openings'll in the periphery of the hub. The foot 14 of each spring is intended to engage the inner surface of the rim and adapted to recelve securing -means such as :bolts 19 passed through the rim and foot. Securing means such as bolts 20'ar'e also intended to be passed through each of the feet 13' of the spring the adjacent-opening 11 and opening 9, the nut of the bolt being disposed v I .110 be quickly tightened. In order to firmly secure the foot 13 to the hub, the :nut offthe I in the opening 9 so as to permit the bolt to bolt is positioned in the recess 10 of the opening 9 to prevent turning of the nut. The bolt is then tightened which firmly clamps the foot 13 in the channel 7, the nut being locked so that the possibility of it becoming loose through vibration is elimihated. A A tire 21either of solid rubber or steel is intended to be disposed in the channei r7. Bolts 22 are passed through openings in the flanges oi the rim 16, the bolt drawing the longer flange inwardly in binding. engagement to the tire sothat slipping or disenga ement is impossible.

fn Fig. 4- a modified ,form of spring is shown. This spring is S-shaped and has its ends 23 and Qtoonstructed similar to the ends'l3 and 1,4 of the preferred form of spring. By this means the strength of the spring is increased so that ii the Wheel is used on trucks or like heavy vehicles the semi-circular form of spring can be repiaced by the S-shaped form of spring, as the 53- shaped form of spring eiiers more resistance and is therefore suitable for heavy loads.

From the foregoing it Will be readily seen that this invention provides a novel form oi? springavheel which in view of its construction can be manufactured for a small amount and as it contalns no movable parts such aspivots 'it Will last indefinitely, the danger of the jsprlng breaking being overcome by the particular construction of its ends. Furthermore' the novel method of connecting the end 13 to the hub eliminates threading the openings 9. This not only saves time in applying the springs but permits conventional fastening means to be used. and so positioned that they are not aii'ected by vibration so that it is not possible for the springs to become accidentally disengaged,

. plurality of openings insaid periphery corn-v munlcatlng with the rectangular P01131011 of said key-hole slot, bolts extending through one end of each spring for securing said end to the periphery of the hub, the head oi said bolt being disposed'in inent with the end of the spring, the shank of said bolt extending througli the opening in the periphery and into the hey-hole slot, and annt threaded on the shank of the bolt Within the circular portion of the key-hoie slot, said nut being drawn into the rectanbolt.

In testimony whereof I hereunto aifix my Signature. I

I JOHN A. JOHNSON;

gular portion of said key-hole slot by the" 

